I admit that I'm sharing these so that I can close the tabs in Firefox. I regret nothing.

First of all, here is a link to a video about magnetic fields, created by Semiconductor and filmed in the NASA Space Sciences laboratory in UC Berkeley. It's also on Youtube, but I'm not posting that vid because the quality isn't as good, and that makes a difference on this one. My reaction wavered between "this is SO cool" and "OMG the magnetic lines are coming to get meeeee". :)